Effective generation of Ising interaction and cluster states in coupled microcavities

TL;DR

This paper presents a scheme to generate Ising interactions and cluster states using coupled microcavities with trapped atoms, leveraging virtual photon exchange, without requiring initial state preparation and being robust against cavity decay.

Contribution

The proposed method enables efficient generation of Ising interactions and cluster states in coupled microcavities without initial state preparation and with decay insensitivity.

Findings

Effective Ising interaction can be realized via virtual photon exchange.

Cluster states can be generated without initial state preparation.

The scheme is insensitive to cavity decay.

Abstract

We propose a scheme for realizing the Ising spin-spin interaction and atomic cluster states utilizing trapped atoms in coupled microcavities. It is shown that the atoms can interact with each other via the exchange of virtual photons of the cavities. Through suitably tuning the parameters, an effective Ising spin-spin interaction can be generated in this optical system, which is used to produce the cluster states. This scheme does not need the preparation of initial states of atoms and cavity modes, and is insensitive to cavity decay.